The ability of respondents to underreport successfully on substance abuse and validity scales of the Minnesota Multiphasic Personality Inventory-Adolescent was evaluated. Incarcerated teens (67 substance abusing, 59 non-substance abusing) completed the MMPI-A twice: once under standard instructions (SI) and once under instructions to fake good (FG). Under SI, substance scales correctly classified about 60% to 85% of adolescents. Under FG, substance-and nonsubstance-abusing juveniles produced lower scores on substance scales. However, the Lie Scale (L) was able to detect more than 75% of deceptive profiles and about 77% of honest profiles. When scale L and the best substance scale were used in combination, only about 18% of faking substance abusers were not identified as either substance abusers or as underreporting. For feigning substance abusers, only about 10% of substance abusers were detected, with about 72% being categorized as faking and needing further assessment.
Keywords incarcerated; faking; MMPI-A; substance useGiven the social and economic costs of adolescent substance abuse, professionals have attempted to develop valid and efficient screening and assessment instruments to identify adolescents with such problems (Personal Experiences Inventory [PEI], Winters, 1999; Substance Abuse Subtle Screening Inventory for Adolescents [SASSI-A], Miller, 1990). It is especially important to screen and assess for such disorders in juvenile correctional settings, where often this is the adolescent's first opportunity for intervention. There is a high rate of substance use and abuse in justice-involved teens (Teplin, Abram, McClelland, Dulcan, & Mericle, 2002), and it is important to be able to identify those adolescents who need more services and those who may not require as many services from a system with few resources.There has been increasing interest in the application of the MMPI-A (Butcher et al., 1992) to juvenile offender populations (e.g., see Cashel, Rogers, Sewell, & Holliman, 1998;Pena, Megargee, & Brody, 1996;, 2001). Screening and assessing for substance problems can be important for understanding factors that may have been involved in misconduct as well as treatment placement. However, screening and assessment can be impeded by motivation to misreport symptoms of substance use. It is important that
NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript screening and assessment measures be able to effectively detect substance use difficulties and misreporting. Fortunately, the MMPI-A has scales to detect substance use problems as well as misreported symptoms and behavior.
Detecting Substance Abuse Using the MMPI-AThe MMPI-A has three scales to detect substance use problems: the MacAndrew Alcoholism Scale-Revised (MAC-R; Butcher et al., 1992), the Alcohol/Drug Problem Acknowledgment (ACK) scale, and the Alcohol/Drug Problem Proneness (PRO) scale (Weed, Butcher, & Williams, 1994). The MAC-R was originally devised by MacAndrew in 1965 and was called the MAC. Effectiveness o...